Version 1.0.1 released

This is a bugfix release. The important changes are fixing the on_log()
callback in the Python module and the log_dest option when running as a
Windows service. The rest of the fixes are documentation and build script
fixes.

Downloads are available on the download page and include all supported
binaries (except for Ubuntu packages which are still waiting to build due to
Launchpad maintenance). The Python module has been uploaded to Python Package
Index.